|Publication number||US4863423 A|
|Application number||US 07/172,233|
|Publication date||Sep 5, 1989|
|Filing date||Mar 23, 1988|
|Priority date||Sep 15, 1987|
|Also published as||DE3863885D1, DE8804194U1, EP0310224A1, EP0310224B1|
|Publication number||07172233, 172233, US 4863423 A, US 4863423A, US-A-4863423, US4863423 A, US4863423A|
|Inventors||Henry G. Wallace|
|Original Assignee||H. G. Wallace Ltd.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (6), Referenced by (75), Classifications (8), Legal Events (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates to a catheter and cannula assembly particularly, although not exclusively, for use in medical practice.
Assemblies of a catheter sliding within a cannula are known for a number of applications. One of the difficulties which arises in the use thereof is that when the distal tip of the cannula has been urged into an opening, it is no longer possible to ascertain the precise depth of penetration of either the cannula or, in use, the catheter sliding within.
In vitro fertilization has been an established medical technique since 1978. An essential device used in placing embryos into the uterus of a recipient is a catheter which can be utilized to enter the cervical canal per vaginum and to deposit the embryos into the uterus without damage. Such a catheter needs to utilize a soft and flexible synthetic polymer in order to avoid trauma to the cervical canal; this of course presents problems in directing the catheter via the cervical canal.
This problem has, in part, been overcome by the utilization of a catheter having a generally rigid outer sheath which is provided so that during the initial direction of the catheter to the external os of the cervical canal, the sheath can be moved to protect the distal tip of the catheter. The catheter can therefore be carried by the cannula through the cervical canal as far as the internal cervical os whereupon the catheter can be moved into the uterine cavity. The catheter can then be advanced and the sheath retracted.
It has been found in use that the performance of this device can be improved if it can be readily ascertained, with the distal end of the cannula in situ, where the distal end of the catheter will be.
Accordingly the present invention provides an assembly of a catheter and a cannula therefor, characterized in that visible gradations are disposed on the surface of the catheter adjacent its hub.
In a preferred form of the invention, the cannula is substantially rigid and is provided with visible gradations adjacent its distal tip. Each of the cannula and catheter are preferably provided adjacent their first ends with hubs, said hubs being interlockable in a closed position such that the catheter is in its position of maximum extension. The catheter is most preferably soft and flexible and is provided with a terminal or side outlet constituted to limit trauma both externally to the uterine tissue, and internally to any embryos passing through the catheter. To this end it is preferred that the cannula is formed of a self-lubricating material such as "TEFLONŽ".
The invention will now be illustrated, by way of illustration only, with reference to the accompanying drawing wherein:
FIG. 1 is a side elevational view of the cannula/catheter assembly in its closed position;
FIG. 2 is a side elevational view of the cannula;
FIG. 3 is a side elevational view of the catheter;
FIG. 4 is a side elevational view of the cannula and catheter assembly with the catheter withdrawn one graduation; and
FIG. 5 is an enlarged vertical cross section through a catheter tip.
With reference to FIGS. 1 and 4 there is provided a cannula (1) being in the form of a hollow tube and provided towards its first end with a hub (2) provided with a series of axially extending fins to assist in manipulation. The distal end of the cannula (1) is provided at intervals of one centimeter with gradations (3) which are marked as a plurality of rings about the distal end, and which may be slightly indented into the outer surface thereof. The remote distal tip of the cannula (4) is chamfered for minimal trauma.
The cannula (1) is adapted to accommodate therewithin a catheter (6) having an external diameter such as to be an easy sliding fit within the cannula (1) and an internal diameter of a size to readily accommodate an embryo. The catheter (6) is provided at its one end with a hub (5) provided about its external surface with a plurality of axially extending fins to assist manipulation. The hub (5) is closed by a venting plug (12) which can be replaceably removed in order to gain access to the bore of the catheter (6). The catheter (6) is provided adjacent the hub (5) with a plurality of equally spaced gradations (8) which are clearly marked in a distinctive color, and which may be slightly indented into the surface of the material of the catheter. The hubs (2) and (5) are adapted such that they interlock in their closed position as shown in FIG. 1. This is done by arranging an interlocking annulus between the said hubs.
The distal end (7) of the catheter (6) is shown in FIG. 5. This is provided with a smoothly radiused chamfer (15) adapted to cause minimum trauma to the uterine tissues.
In use, the hubs (2) and (5) are disengaged and the cannula (1) is moved so that the distal ends of the catheter and cannula are co-incident. The cannula, which is formed of a generally rigid self-lubricating plastics material such as TEFLONŽ is advanced toward the external os of the cervical canal. With the distal end (4) of the cannula (1) positioned at the external os of the cervical canal, ideally the catheter (6) can be advanced so as to negotiate the cervical canal to the internal os into the uterus. However, often an obstruction or tortuous path is encountered in the cervical canal. In this instance the catheter (6) may be gently rotated within the cannula (1) to assist its advance.
However, since the catheter is soft, the advance of the distal tip (7) thereof can be readily obturated. In this instance the cannula (1) is gently advanced through the cervical canal to overcome obstruction or tortuous route so that the catheter (6) can pass into the uterus. It is however important that the cannula does not penetrate beyond the internal os and for this reason the gradation on its distal tip may be inspected to ensure that this does not occur. With the distal end of the catheter at the internal os of the uterus it is then possible to retract the cannula (1) while leaving the catheter in situ. This is a very delicate operation which is materially assisted by the gradation which are required so that it can be ensured that the retraction of the cannula is not associated with a commensurate retraction of the catheter. When the catheter is in situ and the cannula has been fully withdrawn the hubs (2) and (5) can be interlocked prior to the introduction of an embryo.
In this particular embodiment the catheter has a softness of approximately Durometer A scale 80 with a constant lumen of, for example 1.5 mm (0.06 inches). The terminal outlet (7) of the catheter (6) is shown in FIG. 5 as being axial. The outlet (7) may, however, be peripheral so long as it is sized and shaped to cause minimum trauma to embryos.
The catheter (6) in accordance with this embodiment of the invention is preferably formed of a flexible synthetic polymer, non-toxic to human embryos, sperm and oocytes as far as is possible.
The present invention provides, therefore, an assembly of a catheter and cannula, particularly for use in in vitro fertilization, but also for medical and other purposes.
The invention also provides a soft flexible catheter formed of a biologically acceptable synthetic polymer, said catheter being provided with a tube and a hub, the external face of the tube adjacent the hub being provided with a series of visible markings or indentations.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1995051 *||Mar 8, 1933||Mar 19, 1935||Benson Rex S||Teat tube|
|US3094124 *||Jun 30, 1960||Jun 18, 1963||Davol Rubber Co||Arterial catheter|
|US3399668 *||Feb 28, 1966||Sep 3, 1968||Edward S. Lundgren||Disposable cholangiography catheter|
|US4194513 *||May 5, 1977||Mar 25, 1980||Indiana University Foundation||Antenatal cell extracting device and method|
|US4500313 *||Jan 27, 1983||Feb 19, 1985||Protectair Limited||Urethral catheter|
|US4738658 *||Sep 19, 1986||Apr 19, 1988||Aries Medical Incorporated||Tapered hemostatic device for use in conjunction with a catheter for alleviating blood leakage and method for using same|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US5058603 *||Jul 28, 1989||Oct 22, 1991||Asahi Kogaku Kogyo K.K.||Length-measuring device and reference color display device for color tone adjustment for use in combination with endoscope|
|US5084022 *||Oct 4, 1989||Jan 28, 1992||Lake Region Manufacturing Company, Inc.||Graduated guidewire|
|US5147315 *||Apr 6, 1990||Sep 15, 1992||C. R. Bard, Inc.||Access catheter and system for use in the female reproductive system|
|US5257972 *||Dec 4, 1992||Nov 2, 1993||Simon Gurmarnik||Device for and method of length determination of epidural anesthesia catheter|
|US5312374 *||Mar 31, 1993||May 17, 1994||Simon Gurmarnik||Device for administration of epidural anesthesia|
|US5328479 *||May 21, 1993||Jul 12, 1994||Simon Gurmarnik||Set for continuous epidural anesthesia|
|US5360389 *||May 25, 1993||Nov 1, 1994||Chenette Philip E||Methods for endometrial implantation of embryos|
|US5437290 *||May 14, 1993||Aug 1, 1995||Board Of Trustees Of The Leland Stanford Jr. University||System and method for monitoring intraluminal device position|
|US5472419 *||Jan 31, 1994||Dec 5, 1995||Imagyn Medical, Inc.||Catheter and method for depositing reproductive material into the reproductive tract of a female|
|US6159179 *||Mar 12, 1999||Dec 12, 2000||Simonson; Robert E.||Cannula and sizing and insertion method|
|US6165165 *||Sep 9, 1999||Dec 26, 2000||Genx International, Inc.||Embryo-implanting catheter assembly and method for making the same|
|US6527752||Sep 25, 2000||Mar 4, 2003||Cook Urological, Inc.||Embryo transfer catheter|
|US6916330||Oct 30, 2001||Jul 12, 2005||Depuy Spine, Inc.||Non cannulated dilators|
|US6929606||May 13, 2003||Aug 16, 2005||Depuy Spine, Inc.||Retractor and method for spinal pedicle screw placement|
|US6966910||Apr 4, 2003||Nov 22, 2005||Stephen Ritland||Dynamic fixation device and method of use|
|US7008431||Oct 30, 2001||Mar 7, 2006||Depuy Spine, Inc.||Configured and sized cannula|
|US7166073||Mar 28, 2005||Jan 23, 2007||Stephen Ritland||Method and device for microsurgical intermuscular spinal surgery|
|US7207992||Sep 30, 2002||Apr 24, 2007||Stephen Ritland||Connection rod for screw or hook polyaxial system and method of use|
|US7214186||Dec 22, 2003||May 8, 2007||Stephen Ritland||Method and device for retractor for microsurgical intermuscular lumbar arthrodesis|
|US7455639||Sep 16, 2005||Nov 25, 2008||Stephen Ritland||Opposing parallel bladed retractor and method of use|
|US7637904||Dec 19, 2003||Dec 29, 2009||Vance Products Incorporated||Catheter with snap on feature|
|US7655025||Mar 1, 2005||Feb 2, 2010||Stephen Ritland||Adjustable rod and connector device and method of use|
|US7682375||May 8, 2003||Mar 23, 2010||Stephen Ritland||Dynamic fixation device and method of use|
|US7695498||Jan 30, 2007||Apr 13, 2010||Stephen Ritland||Connection rod for screw or hook polyaxial system and method of use|
|US7753939||Feb 10, 2004||Jul 13, 2010||Stephen Ritland||Polyaxial connection device and method|
|US7763047||Feb 20, 2003||Jul 27, 2010||Stephen Ritland||Pedicle screw connector apparatus and method|
|US7824410||Aug 10, 2004||Nov 2, 2010||Depuy Spine, Inc.||Instruments and methods for minimally invasive spine surgery|
|US7909843||Jun 30, 2004||Mar 22, 2011||Thompson Surgical Instruments, Inc.||Elongateable surgical port and dilator|
|US7959564||Jul 9, 2007||Jun 14, 2011||Stephen Ritland||Pedicle seeker and retractor, and methods of use|
|US7985245||Nov 18, 2005||Jul 26, 2011||Stephen Ritland||Connection rod for screw or hook polyaxial system and method of use|
|US8021399||Jul 19, 2006||Sep 20, 2011||Stephen Ritland||Rod extension for extending fusion construct|
|US8192437||Jun 5, 2012||Depuy Spine, Inc.||Configured and sized cannula|
|US8221459||Jul 26, 2010||Jul 17, 2012||Stephen Ritland||Pedicle screw connector apparatus and method|
|US8235999||May 10, 2010||Aug 7, 2012||Depuy Spine, Inc.||Configured and sized cannula|
|US8262571||May 24, 2004||Sep 11, 2012||Stephen Ritland||Intermuscular guide for retractor insertion and method of use|
|US8292798||Oct 23, 2012||Eurica Califorrniaa||Incubator for babies before implantation|
|US8308662||Dec 7, 2007||Nov 13, 2012||Arthrex, Inc.||Measuring device|
|US8361151||Jun 14, 2012||Jan 29, 2013||Depuy Spine, Inc.||Configured and sized cannula|
|US8444678||Oct 21, 2010||May 21, 2013||Depuy Spine, Inc.||Instruments and methods for minimally invasive spine surgery|
|US8465412 *||Feb 19, 2002||Jun 18, 2013||Michael Levy||Uterine devices and method of use|
|US8469876||Dec 1, 2003||Jun 25, 2013||Michael Levy||Endoscopic devices and method of use|
|US8486111||Jun 22, 2006||Jul 16, 2013||Stephen Ritland||Dynamic fixation device and method of use|
|US8556905||Dec 27, 2012||Oct 15, 2013||Depuy Spine, Inc.||Configured and sized cannula|
|US8585739||Mar 23, 2010||Nov 19, 2013||Stephen Ritland||Dynamic fixation device and method of use|
|US8685062||Mar 23, 2010||Apr 1, 2014||Stephen Ritland||Dynamic fixation device and method of use|
|US8690922||Mar 1, 2010||Apr 8, 2014||Stephen Ritland||Dynamic fixation device and method of use|
|US8845694||Sep 19, 2011||Sep 30, 2014||Warsaw Orthopedic, Inc.||Rod extension for extending fusion construct|
|US8852244||Sep 13, 2013||Oct 7, 2014||DePuy Synthes Products, LLC||Configured and sized cannula|
|US8932334||Sep 9, 2005||Jan 13, 2015||Stephen Ritland||Dynamic fixation device and method of use|
|US9017313||Oct 30, 2007||Apr 28, 2015||Nuvasive, Inc.||Method and apparatus for computerized surgery|
|US9028551||Sep 2, 2014||May 12, 2015||DePuy Synthes Products, Inc.||Configured and sized cannula|
|US9107696||Jan 5, 2009||Aug 18, 2015||Emory University||Method of embryo transfer that eliminates transferred air while hormonally inducing implantation and apparatus|
|US20020095066 *||Feb 19, 2002||Jul 18, 2002||Kamrava Michael M.||Uterine devices and method of use|
|US20020123668 *||Jan 29, 2002||Sep 5, 2002||Stephen Ritland||Retractor and method for spinal pedicle screw placement|
|US20030032896 *||Oct 4, 2002||Feb 13, 2003||Vance Products, Inc., D/B/A/ Cook Urological, Inc.||Microvolume embryo transfer system|
|US20030187431 *||Mar 29, 2002||Oct 2, 2003||Simonson Robert E.||Apparatus and method for targeting for surgical procedures|
|US20030236447 *||May 13, 2003||Dec 25, 2003||Stephen Ritland||Retractor and method for spinal pedicle screw placement|
|US20040122286 *||Dec 1, 2003||Jun 24, 2004||Kamrava Michael M.||Endoscopic devices and method of use|
|US20050137448 *||Dec 19, 2003||Jun 23, 2005||Vance Products Incorporated, D/B/A Cook Urological Incorporated And Sabin Corporation||Catheter with snap on feature|
|US20050203490 *||May 10, 2005||Sep 15, 2005||Depuy Spine, Inc.||Apparatus and method for targeting for surgical procedures|
|US20060089608 *||Sep 19, 2005||Apr 27, 2006||Vance Products Incorporated||Embryo transfer using tranvaginal ultrasound transducer|
|US20060183973 *||Mar 24, 2006||Aug 17, 2006||Kamrava Michael M||Endoscopic devices and method of use|
|US20080065067 *||Oct 30, 2007||Mar 13, 2008||Active Implants Corporation||Method and apparatus for computerized surgery|
|US20080108994 *||Oct 30, 2007||May 8, 2008||Active Implants Corporation||Method and apparatus for computerized surgery|
|US20080147188 *||Oct 30, 2007||Jun 19, 2008||Active Implants Corporation||Method and apparatus for computerized surgery|
|US20080306408 *||Dec 7, 2007||Dec 11, 2008||Arthrex, Inc.||Measuring device|
|US20100036193 *||Jan 5, 2009||Feb 11, 2010||Jesse Albert Pizolato||Method of Embryo Transfer that Eliminates Transferred Air While Hormonally Inducing Implantation and Apparatus|
|US20100137914 *||Feb 1, 2010||Jun 3, 2010||Stephen Ritland||Adjustable rod and connector device|
|US20100160969 *||Mar 1, 2010||Jun 24, 2010||Stephen Ritland||Dynamic Fixation Device and Method of Use|
|US20100174318 *||Mar 23, 2010||Jul 8, 2010||Stephen Ritland||Dynamic Fixation Device and Method of Use|
|US20100179596 *||Mar 23, 2010||Jul 15, 2010||Stephen Ritland||Dynamic Fixation Device and Method of Use|
|US20110022094 *||Jan 27, 2011||Stephen Ritland||Pedicle Screw Connector Apparatus and Method|
|USRE42525 *||Jun 10, 2002||Jul 5, 2011||Depuy Spine, Inc.||Cannula and sizing insertion method|
|USRE45571||Dec 17, 2010||Jun 23, 2015||DePuy Synthes Products, Inc.||Cannula and sizing insertion method|
|WO1999037348A1 *||Jan 23, 1998||Jul 29, 1999||Jun Tao||Catheter system for implanting embryos|
|U.S. Classification||604/48, 600/587, 604/523|
|International Classification||A61M25/06, A61B19/00|
|Cooperative Classification||A61B2019/5437, A61M25/06|
|Mar 23, 1988||AS||Assignment|
Owner name: H.G. WALLACE LTD.,UNITED KINGDOM
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WALLACE, HENRY G.;REEL/FRAME:004849/0434
Effective date: 19880308
|Feb 26, 1993||FPAY||Fee payment|
Year of fee payment: 4
|Oct 14, 1994||AS||Assignment|
Owner name: SMITHS INDUSTRIES PLC, A UNITED KINGDOM CORP., UNI
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:H G WALLACE, A UNITED KINGDOM CORP.;REEL/FRAME:007170/0518
Effective date: 19940818
|Feb 28, 1997||FPAY||Fee payment|
Year of fee payment: 8
|Feb 16, 2001||FPAY||Fee payment|
Year of fee payment: 12